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Table 1
Observational parameters of the ATCA mapping.
| Target source | Cha-MMS1 | |
| Phase centre |
|
δ2000.0 = −77°23′42″ |
| Centre frequency | 23 692.5 MHz | |
| Correlator config. | FULL_4_1024-128 | |
| Dates | Sep. 6, 2003 | Sep. 30, 2003 |
| ATCA configuration | EW367B | EW352 |
| Flux calibrator | Jupiter | Mars |
| Bandpass calibrator | 1921−293 | 1253−055 |
| Sν = 13.58 ± 0.03 Jy | Sν = 18.01 ± 0.05 Jy | |
| Phase calibrator | 1057−797 | |
| S23.7GHz = 1.84 ± 0.05 Jy | ||
| Linear polarisation | ||
| 4.7% (PA − 63°) | ||
| Image processing | Naturally weighted | |
| Synthesised beam |  (PA − 37°) |
|
| Primary beam |
|
|
| 1σ rms noise | 9.5 mJy beam-1 or 0.5 K per 3.9 kHz channel | |
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